Package com.clickhouse.client.api.data_formats

Class NativeFormatReader

java.lang.Object

com.clickhouse.client.api.data_formats.internal.AbstractBinaryFormatReader

com.clickhouse.client.api.data_formats.NativeFormatReader

All Implemented Interfaces:

ClickHouseBinaryFormatReader, AutoCloseable

public class NativeFormatReader
extends AbstractBinaryFormatReader

For the backward compatibility server will not send TZ id in column type. Client should send version to a server to get the correct column type. (see: https://github.com/ClickHouse/ClickHouse/issues/38209)

Field Summary

Fields inherited from class com.clickhouse.client.api.data_formats.internal.AbstractBinaryFormatReader

binaryStreamReader, currentRecord, input, nextRecord, nextRecordEmpty, settings

Constructor Summary

Constructors

Constructor	Description
NativeFormatReader(InputStream inputStream, QuerySettings settings, BinaryStreamReader.ByteBufferAllocator byteBufferAllocator)

Method Summary

Modifier and Type	Method	Description
boolean	readRecord(Map<String,Object> record)	It is still internal method and should be used with care.
<T> T	readValue(int colIndex)	Reads a single value from the stream.
<T> T	readValue(String colName)	Reads a row to an array of objects.

Methods inherited from class com.clickhouse.client.api.data_formats.internal.AbstractBinaryFormatReader

close, endReached, getBigDecimal, getBigDecimal, getBigInteger, getBigInteger, getBoolean, getBoolean, getBooleanArray, getBooleanArray, getByte, getByte, getByteArray, getByteArray, getClickHouseBitmap, getClickHouseBitmap, getConvertions, getDouble, getDouble, getDoubleArray, getDoubleArray, getDuration, getDuration, getEnum16, getEnum16, getEnum8, getEnum8, getFloat, getFloat, getFloatArray, getFloatArray, getGeoMultiPolygon, getGeoMultiPolygon, getGeoPoint, getGeoPoint, getGeoPolygon, getGeoPolygon, getGeoRing, getGeoRing, getInet4Address, getInet4Address, getInet6Address, getInet6Address, getInstant, getInstant, getIntArray, getIntArray, getInteger, getInteger, getList, getList, getLocalDate, getLocalDate, getLocalDateTime, getLocalDateTime, getLong, getLong, getLongArray, getLongArray, getOffsetDateTime, getOffsetDateTime, getSchema, getShort, getShort, getString, getString, getTemporalAmount, getTemporalAmount, getTuple, getTuple, getUUID, getUUID, getZonedDateTime, getZonedDateTime, hasNext, hasValue, hasValue, next, readAsString, readNextRecord, readToPOJO, setSchema

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

NativeFormatReader

public NativeFormatReader(InputStream inputStream,
 QuerySettings settings,
 BinaryStreamReader.ByteBufferAllocator byteBufferAllocator)

Method Details

readRecord

public boolean readRecord(Map<String,Object> record)
                   throws IOException

Description copied from class: AbstractBinaryFormatReader

It is still internal method and should be used with care. Usually this method is called to read next record into internal object and affects hasNext() method. So after calling this one: - hasNext(), next() should not be called - stream should be read with readRecord() method fully

Overrides:

readRecord in class AbstractBinaryFormatReader

Returns:

Throws:

IOException

readValue

public <T> T readValue(int colIndex)

Description copied from interface: ClickHouseBinaryFormatReader

Reads a single value from the stream.

Specified by:

readValue in interface ClickHouseBinaryFormatReader

Overrides:

readValue in class AbstractBinaryFormatReader

Returns:

readValue

public <T> T readValue(String colName)

Description copied from interface: ClickHouseBinaryFormatReader

Reads a row to an array of objects.

Specified by:

readValue in interface ClickHouseBinaryFormatReader

Overrides:

readValue in class AbstractBinaryFormatReader

Returns: